An electrode holder, also known as a welding electrode clamp or stinger, is a crucial tool used in arc welding processes. It is a handheld device that securely grips and connects the welding electrode to the welding machine's output terminal. The electrode holder plays a vital role in transferring the electrical current from the welding machine to the welding electrode, enabling the arc to be struck and maintained during welding.

Typically, an electrode holder consists of an insulated handle and a robust, copper alloy jaw or clamp that securely holds the welding electrode in place. The insulated handle provides electrical insulation, protecting the welder from electric shocks while allowing easy manipulation of the electrode during welding.

The electrode holder is essential for maintaining a stable and consistent welding arc, which is crucial for achieving high-quality welds. A well-designed and properly maintained electrode holder ensures a reliable electrical connection, preventing arcing, overheating, or electrode slippage during welding operations.